1) quasi-acicular ferrite
准针状铁素体组织
1.
Based on spike height resulting in break marks,the new technique of eliminating break marks by getting microstructure of quasi-acicular ferrite in hot strip mill was applied.
结果表明:产生横折缺陷存在临界的上下屈服点应力差,准针状铁素体组织可降低上下屈服点应力差,并使其低于这个临界值,更为重要的是,准针状铁素体组织使控制横折缺陷的工艺难度大大降低;钢中碳含量高、奥氏体晶粒粗、加速冷却速度快、加速冷却开始和结束温度低,有利于获得准针状铁素体组织,最佳的加速冷却开始和结束温度分别为先共析铁素体和珠光体开始转变温度。
2) acicular ferrite microstructure
针状铁素体组织
1.
This study introduced the economictype X70 of hot strip which was designed by C-Mn-Cr-Nb alloy system and acicular ferrite microstructure,and produced by medium-thickness slab casting and direct rolling production line in Ansteel.
本文介绍鞍钢采用C-Mn-Cr-Nb系针状铁素体组织设计,在中等厚度板坯连铸坯连铸连轧生产线上研制开发经济型X70管线钢热轧卷板,产品具有高强度、良好的低温韧性和焊接性能,同时可大幅降低生产成本,应用于西气东输二线和中亚输气管线等国家重点工程。
2.
This paper introduced X70 and X80 HRC with heavy thickness which were designed by low carbon,high niobium acicular ferrite microstructure,and developed on medium thickness slab continuous casting production line in Ansteel.
介绍了鞍钢股份有限公司采用低碳高铌针状铁素体组织设计、在中等厚度连铸坯连铸连轧生产线上研制开发特厚规格X70和X80级管线钢热轧卷板的情况。
3) Ferrite Strip Structure
铁素体带状组织
4) acicular ferrite
针状铁素体
1.
Thermodynamic analysis on intermediate transformation mechanism of acicular ferrite in welds;
焊缝针状铁素体中温转变机制的热力学分析
2.
Effects of nonmetallic inclusions on acicular ferrite nucleation in deposited metals of microalloyed steel;
夹杂物对微合金钢熔敷金属针状铁素体形核的影响
3.
Thermodynamic analysis of pre-eutectoid transition of acicular ferrite in carbon-depleted regions of austenite in Fe-C-X alloys;
Fe-C-X系合金针状铁素体在奥氏体贫碳区先共析转变的热力学分析
5) quasi-single phase ferrite
准单相铁素体组织
1.
The experimental results have shown that the quasi-single phase ferrite matrix micro-structure can be obtained by isothermal holding between 650℃ and 750℃ after deformation, and the pearlite could be eliminated.
结果表明,变形后在650-750℃等温100 s时可获得准单相铁素体组织从而基本消除珠光体组织。
6) bainite cast iron
针状组织铸铁
补充资料：带状组织
带状组织
banded orientation
daizhuang zuzhi带状组织 (banded orientation) 钢材内部缺陷之一，出现在热轧低碳结构钢显微组织中，沿轧制方向平行排列、成层状分布、形同条带的铁素体晶粒与珠光体晶粒(见图)。这是由于钢材在热轧后的冷却过程中发生相变时铁素体优先在由枝晶偏析和非金属夹杂延伸而成的条带中形成，导致铁素体形成条带，铁素体条带之间为珠光体，两者相间成层分布。带状组织的存在使钢的组织不均匀，并影响钢材性能，形成各向异性，降低钢的塑性、冲击韧性和断面收缩率，造成冷弯不合、冲压废品率高、热处理时钢材容易变形等不良后果。产品标准中有带状组织评级图片，根据用途确定允许的级别。 (崔峰许庆泰)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条